Scale Drawings and Area

Question 1

Which ratios can be used to find the scale factor? Check all that apply.

Revolt · Accepted Answer

Scale factor = StartFraction enlarged over original EndFraction = StartFraction 6.5 over 3.25 EndFraction; Scale factor = StartFraction enlarged over original EndFraction = StartFraction 3 over 1.5 EndFraction

Question 2

The perimeter of the enlarged rectangle can be found by multiplying the scale factor and the original perimeter to get .

Revolt · Accepted Answer

19

Question 3

The area of the scale model is times the area of the original figure.

Revolt · Accepted Answer

4

Question 4

The scale factor is .

Revolt · Accepted Answer

2; Selection 1: 2; Selection 2: 19; Selection 3: 4

Question 5

Maria solved the area problem below. What was her error?

Revolt · Accepted Answer

She forgot to square the scale factor.

Question 6

What is the area of the enlarged triangle? cm2

Revolt · Accepted Answer

281.25

Question 7

A backyard is 40.5 feet long and 25 feet wide. In order to install a pool, the yard needs to be reduced by a scale of . What is the area of the reduced yard? feet2

Revolt · Accepted Answer

112.5

Question 8

✔ 25 49 175 196 mm

Revolt · Accepted Answer

25

Scale Drawings and Area Answers

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